Tag Archive for 'STEREO'

This illustration depicts the asteroid Phaethon being heated by the Sun. Image credit: NASA / JPL-Caltech / IPAC.

Comet-Like Tail of Near-Earth Asteroid Phaethon is Not Made of Dust, Astronomers Say

Apr 25, 2023 by Enrico de Lazaro

New research shows that Phaethon’s comet-like activity cannot be explained by any kind of dust. This illustration depicts the asteroid Phaethon being...

This image, captured by the SoloHI instrument onboard the ESA/NASA Solar Orbiter, shows the comet Leonard. Image credit: ESA / NASA / NRL / SoloHI.

NASA’s and ESA’s Sun-Studying Missions Observe Comet Leonard

Dec 22, 2021 by News Staff

When C/2021 A1 (Leonard), a recently-discovered long-period comet about 1 km wide, makes its closest pass of the Sun on January 3, 2022, it will be a journey...

Sketch of the relative positions of NASA’s and ESA’s spacecraft that observed the February 12, 2021 coronal mass ejections; ESA’s Solar Orbiter spacecraft was ‘behind’ the Sun from the perspective of Earth; the Earth was about 12 degrees west of Sun-center as seen from Solar Orbiter; ESA’s Proba-2, which orbits the Earth, and the ESA/NASA Solar and Heliospheric Observatory (SOHO), which is located in orbit around the Lagrange point 1, 1.5 million km in front of the Earth towards the Sun, also viewed the coronal mass ejection; NASA’s STEREO-A (Solar Terrestrial Relations Observatory) also caught a glimpse of the event from its viewpoint away from the direct Sun-Earth line; together the spacecraft provide valuable, different perspectives on the same event. Image credit: ESA.

Solar Orbiter Observes Two Huge Eruptions on Sun

May 18, 2021 by News Staff

The Extreme Ultraviolet Imager (EUI), the Heliospheric Imager (SoloHI) and the Metis coronagraph onboard the ESA/NASA Solar Orbiter captured different...

On August 31, 2012, a long filament of solar material that had been hovering in the Sun’s atmosphere, the corona, erupted out into space at 4:36 p.m. EDT. The CME traveled at over 900 miles per second. It did not travel directly toward Earth, but did connect with Earth’s magnetic environment, or magnetosphere, with a glancing blow, causing aurora to appear on the night of September 3. Image credit: NASA’s Goddard Space Flight Center.

Researchers Recreate Solar Eruption in 3D

Mar 9, 2018 by News Staff

Using data from the NASA/ESA Solar and Heliospheric Observatory (SOHO) and NASA’s twin Solar Terrestrial Relations Observatory (STEREO) satellites, solar...

When Comet 96P/Machholz appeared in SOHO’s view in 2012, astronomers discovered two tiny comet fragments some distance ahead of the main body, signaling the comet was actively changing. This time around they have detected a third fragment -- another breadcrumb in the trail that indicates 96P/Machholz is still evolving. Image credit: ESA / NASA’s Goddard Space Flight Center / SOHO / Steele Hill.

ESA and NASA Solar Observatories Snap Sungrazing Comet

Nov 9, 2017 by News Staff

The NASA/ESA Solar and Heliospheric Observatory (SOHO) and NASA’s Solar and Terrestrial Relations Observatory (STEREO) have captured amazing photos of...

SDO image of the solar corona in UV light (yellow lines represent the magnetic field on the surface of the Sun). Image credit: NASA / SDO / AIA / LMSAL.

Astronomers Detect Planetary Waves on Sun

Mar 28, 2017 by News Staff

Using data from NASA’s SDO (Solar Dynamics Observatory) and STEREO (Solar TErrestrial RElations Observatory) missions, astronomers have detected so-called...

The Sun’s corona and solar wind. Image credit: NASA’s Goddard Space Flight Center / Lisa Poje.

Latest Images from NASA’s STEREO Spacecraft Reveal Origins of Solar Wind

Sep 1, 2016 by News Staff

The details of the transition from defined rays in the upper atmosphere of the Sun to the solar wind have always been a mystery. Using NASA’s STEREO...

This picture shows four views of the 10 December 2013 solar flare from SDO, STEREO, and Hinode. The current sheet is a long, thin structure, especially visible in the views on the left. Image credit: NASA / JAXA / SDO / STEREO / Hinode / Zhu et al.

Three Solar Observatories Hone in on Powerful Solar Flare

Apr 20, 2016 by News Staff

During a December 2013 solar flare, three solar-watching satellites — NASA’s Solar Dynamics Observatory (SDO), the agency’s Solar and Terrestrial...

The X2.2-class flare, March 11, 2015. Image credit: SDO / NASA.

New Tool Could Predict Earth-Directed Coronal Mass Ejections Day in Advance

Jun 11, 2015 by News Staff

A new measurement and modeling tool could give more than 24 hours’ notice of coronal mass ejections that could be harmful to systems on Earth. New tool...

This combination of three wavelengths of light from NASA's SDO shows one of the multiple jets that led to a series of slow coronal puffs on January 17, 2013. The light has been colorized in red, green and blue. Image credit: Nathalia Alzate / SDO.

NASA’s Solar Observatories Capture Unusual Eruptions on Sun

Jun 30, 2014 by News Staff

A team of astronomers using NASA’s three Sun-gazing spacecraft – Solar and Heliospheric Observatory (SOHO), Solar Terrestrial Relations Observatory...